Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Carvalho, F. C. A."'
A new inflationary scenario driven by a slowly-rolling homogeneous scalar field whose potential $V\left(\varphi\right)$ is given by a generalized exponential function is investigated. Within the {\it slow-roll} approximation we obtain the main predic
Externí odkaz:
http://arxiv.org/abs/2409.07678
Autor:
Sales, L. L., Carvalho, F. C.
Publikováno v:
Eur. Phys. J. C 84, 671 (2024)
We investigate the non-Gaussian effects of the Saha equation in Rindler space via Tsallis statistics. By considering a system with cylindrical geometry, we deduce the non-Gaussian Saha ionization equation for a partially ionized hydrogen plasma that
Externí odkaz:
http://arxiv.org/abs/2307.07644
Publikováno v:
Eur. Phys. J. C (2023) 83:466
In this paper, we revisit the hydrogen recombination history from a novel perspective: the evolution of chemical potentials. We derive expressions for the chemical potentials, which depend on the thermal bath temperature and the ionization degree of
Externí odkaz:
http://arxiv.org/abs/2304.13857
Publikováno v:
Eur. Phys. J. C (2022) 82:54
Tsallis' thermostatistical has received increasing attention due to its success in describing phenomena that manifest unusual thermodynamic properties. In this context, the generalized Saha equation must follow a condition of generalized thermal equi
Externí odkaz:
http://arxiv.org/abs/2201.07922
Autor:
Sales, L. L.1,2 (AUTHOR) lazarosales@alu.uern.br, Carvalho, F. C.1 (AUTHOR)
Publikováno v:
European Physical Journal C -- Particles & Fields. Jul2024, Vol. 84 Issue 7, p1-10. 10p.
Akademický článek
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Publikováno v:
Eur. Phys. J. C (2019) 79: 175
The attempt to describe the recent accelerated expansion of the Universe includes different propositions for dark energy models and modified gravity theories. Establish their features in order to discriminate and even rule out part of these models us
Externí odkaz:
http://arxiv.org/abs/1801.04534
Publikováno v:
Eur. Phys. J. C (2018) 78: 710
Among the various possibilities to probe the theory behind the recent accelerated expansion of the universe, the energy conditions (ECs) are of particular interest, since it is possible to confront and constrain the many models, including different t
Externí odkaz:
http://arxiv.org/abs/1711.07259
Publikováno v:
ApJ 826 121 (2016)
Evidences for late-time acceleration of the Universe are provided by multiple probes, such as Type Ia supernovae, the cosmic microwave background (CMB) and large-scale structure (LSS). In this work, we focus on the integrated Sachs--Wolfe (ISW) effec
Externí odkaz:
http://arxiv.org/abs/1512.00641
The cosmological consequences of an interacting model in which vacuum decay law is deducted from the effect that vacuum decay has on the dark matter evolution are investigated. Here, the baryonic matter is also considered as a fluid gravitationally c
Externí odkaz:
http://arxiv.org/abs/1406.1706